hv_netvsc: Fix the real number of queues of non-vRSS cases

For older hosts without multi-channel (vRSS) support, and some error
cases, we still need to set the real number of queues to one.
This patch adds this missing setting.

Fixes: 8195b1396ec8 ("hv_netvsc: fix deadlock on hotplug")
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index a32ae02..e9d54c9 100644 (file)
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -1935,6 +1935,12 @@ static int netvsc_probe(struct hv_device *dev,
        /* We always need headroom for rndis header */
        net->needed_headroom = RNDIS_AND_PPI_SIZE;
 
+       /* Initialize the number of queues to be 1, we may change it if more
+        * channels are offered later.
+        */
+       netif_set_real_num_tx_queues(net, 1);
+       netif_set_real_num_rx_queues(net, 1);
+
        /* Notify the netvsc driver of the new device */
        memset(&device_info, 0, sizeof(device_info));
        device_info.ring_size = ring_size;